20212907

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 24349248

約数和(自身を除く): 4136341

約数列:

[1, 11, 13, 83, 131, 143, 169, 913, 1079, 1441, 1703, 1859, 10873, 11869, 14027, 18733, 22139, 119603, 141349, 154297, 243529, 1554839, 1837537, 20212907]

約数ペア:

[(1, 20212907), (11, 1837537), (13, 1554839), (83, 243529), (131, 154297), (143, 141349), (169, 119603), (913, 22139), (1079, 18733), (1441, 14027), (1703, 11869), (1859, 10873)]